那时感光材料就3大厂，保定，上海，汕头。

来源: 吾道悠悠于 2014-07-11 02:16:02 [旧帖] [给我悄悄话] 本文已被阅读：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.